GENERAL: CSD O3 (shares HIML with AO2) has been having offsets with GMD O3. Cause unclear but possibly water related. O2 excess in BL (~20 per meg) grows in strength and depth southwards. CO2 deficit much smaller (~ 2 ppm). On final climbout ~ 1:20 at 10 kft, very sharp transition in O2 and H2O (saved PNG). Hit stratosphere on final climb around 30 kft. AO2: FlWT = 111, FlSP = 104 - need to tune new 1250 and/or debug difference Noise went up 30 min after lamp light - why? 21:59:45 to MAN and uncheck HS purge to delay cal 22:07:30 back to AUTO, purging HS 22:52:40 keep calibrating over CO2/O2 feature on descents, so to MAN, select SA, unpurge SA to end cal 23:07:40 back to AUTO, purging LS 00:32:20 to MAN, to SA, uncheck HS and SA purge to end cal in BL 00:42:10 back to AUTO climbing through 15 kft, and calint to 45 to stay away from dips. 02:13:05 to MAN, uncheck LS purge to delay cal 02:28 descent to east of north half of the S. Island, wind out of the southwest (220-240) - see terrestrial signal? 02:35 O2 up for a few minutes while level at 11 kft. Clouds to west just over mtn top. Stratus deck just below us. Eventually dropped lower and O2 went up, but transition not sharp. 02:53:25 to AUTO, purging LS Last cal on the ground. MEDUSA: Ice to w/in 1" in hope of avoiding clog. Some leak checking and procedure testing preflight. Flow back up and stable by 21:58 on descent @ 38 kft. First flask @ 22:10, so 12 minutes of stable flow. Switching to targeting based on GALTF from now on. 22:18 Flow is around 3000 and Pbypass seems low - will check again after this dip. 22:30:30 On position #6, put into bypass - Flow = 3050, Pbypass = 703. Will assume that trap ice or pump performance are causing low flow, and will adjust Pdn to get higher flask P. Set Pdown to 500 (from 400). Pbypass now = 759. 22:33:30, back to flask #6. Flow is not significantly affected by Pdown, so should build this adjustment into climbout procedures? ~ 22:34:30, flow drops way down (2100). Tried holding, rubbing, and breathing on inlet tube. Got exterior ice to melt. 22:41:45 Flow down to < 200 sccm. Pulled pump breaker. Saw flow spiked back up just after pump off, so tried pump back on at 22:44 [forgot to protect Valve Box on these on/offs]. 22:44, flow back up to 3000 and stable. Sampled flask #6 at 22:48 (only 4 minutes of stable flow) ~22:50, rechecked Pbypass in bypass. Now around 780. Will try to adjust Pdown again on next climb. ~25:24 checked Pbypass. 765. 01:20 Flask #26 has a big CO2 and H2O anomalie. 01:41 climbing through 38. To bypass, to 90/670. Pbypass = 746. Upped Pdn to 690. Pbypass to 766. Bypass off. Forgot to close flasks 1-16 until near end of sampling @ 1:55.